You cannot talk about hip-hop bass without the Roland TR-808. Designed under Roland founder Ikutaro Kakehashi and released in 1980, it was a commercial flop at first - producers wanted realistic drums, and the 808 sounded nothing like them. Its fortunes changed when artists started using it on records: Marvin Gaye's "Sexual Healing" and Afrika Bambaataa's "Planet Rock" helped make it iconic. Its long, booming kick drum went on to become the bass instrument of Southern hip-hop, trap and drill.
What an 808 is now
In modern production, "808" usually means a sustained, pitched bass sound based on that kick drum - a sine-like tone with a punchy attack and a long decay, played as a melodic bassline. You can use samples of the original machine, dedicated 808 instruments, or design your own from a sine wave with a pitch envelope.
Tuning
An 808 is a pitched instrument. Every note must be in key.
- Find the root pitch of your 808 sample, and map it correctly in your sampler so notes play in tune.
- Write the bassline in the key of the track, usually following the root notes of the chords.
- Check low notes on a spectrum analyser - sub frequencies can be hard to hear accurately on small speakers.
Glide
Sliding between notes - portamento or glide - is the signature of trap 808s. Set your sampler to mono or legato mode with a glide time, and overlap notes to trigger the slide. Slides up into the next phrase, or down at the end of a bar, add movement and attitude.
The kick and the 808
The kick and the 808 occupy the same frequency range. Decide how they work together:
- 808 as the kick - no separate kick; the 808's attack provides the punch.
- Kick on top - a short, punchy kick layered with the 808 start. Align the transients and check the phase - two low sounds starting at slightly different times can cancel each other out.
- Kick and 808 alternating - the kick on some beats, the 808 on others.
- Sidechain - duck the 808 slightly every time the kick hits so both are clear.
Translation: making 808s audible everywhere
Pure sub-bass disappears on phones and laptop speakers. To make an 808 audible everywhere:
- Saturation or distortion adds upper harmonics that the ear hears even when the fundamental is not reproduced. Many modern 808s are heavily distorted.
- A layer - a mid-range bass or a distorted copy - carries the line on small speakers.
- Check on small speakers. If the bassline vanishes on a phone, add harmonics.
Length and decay
- Long 808s fill space and add weight; short ones leave room and add bounce.
- Shorten notes before the next kick or 808 hit to avoid low-end mud.
- Automate decay or use different 808 samples for different sections.
Mixing low end
- Mono below about 100 Hz.
- High-pass everything else that does not need sub frequencies, so the 808 owns the bottom.
- Do not over-boost - too much sub eats headroom and makes the whole mix quieter.
- Reference against commercial tracks in your genre at matched loudness.
Basslines beyond the 808
Not every hip-hop track uses an 808. Boom bap often uses a sampled bass, a bass guitar or a synth bass playing a melodic line. G-funk uses deep synth bass with glide. Whatever the sound, the same rules apply: in key, locked to the kick, and audible on every system.
Do this now
- Load an 808 sample, find its root pitch, and map it so it plays in tune.
- Write an eight-bar bassline following the chord roots, with two glides.
- Layer a short kick on top, align the transients, and check the phase.
- Add saturation and check the bassline on a phone speaker.